Mix in a bowl lemon juice, mustard, mashed garlic, rosemary, oregano and thyme. Add spices per taste and mix well. Clean fish and cut little in several places, pour prepared marinade over fish and leave in the fridge at least 60 minutes. Arrange fish in baking dish covered with baking paper and bake in preheated oven on 200 degrees until get nice golden yellow color. Wash zucchini and eggplant and cut into cubes together with the skin. Spice vegetables per your taste and fry on a little allowed oil to soften. Serve with the fish.